Abstract: An oil supply device for a crankcase of an internal combustion engine feeds oil from a reservoir to a main oil duct of the crankcase. A filter switching device allows a selection from a plurality of oil filter units in the flow path of the oil to be selectively connected into the oil flow path, to set a proportion of the oil filter units to active and a proportion of the oil filter units to passive. A switching unit switches between the active and passive states and opens up a pressurized oil flow path to the active oil filter unit(s) and also a drainage flow path between the passive oil filter unit(s) and a drainage duct. An evacuation device drains or evacuates oil from the drainage duct which has accumulated at the passive oil filter unit(s).

Abstract: A method is provided for reformulating a chemical mechanical planarization (CMP) slurry for use in conjunction with a CMP tool having an active cycle during which the tool is being used to planarize a substrate, and a rinse cycle during which the tool is being rinsed. The method comprises (a) receiving a feed stream from the CMP tool, at least a portion of the feed stream comprising abrasive particles disposed in a liquid medium; (b) during at least a portion of the rinse cycle, sending the feedstream received from the CMP tool to a first location; and (c) during at least a portion of the active cycle, sending the feedstream received from the CMP tool to a second location where the feedstream undergoes processing to reformulate the slurry.

Abstract: A drive device for a motor vehicle includes a multi-cylinder internal combustion engine and at least two exhaust gas turbocharger devices. At least one outlet valve is assigned to an exhaust gas turbocharger device of each cylinder of the internal combustion engine in such a manner that the exhaust gas duct assigned to this outlet valve is connected to the turbine wheel of the exhaust gas turbocharger device.

Abstract: A method for model-based determination of the total fresh air mass flowing into the cylinder combustion chamber of an internal combustion engine during an intake phase is described. The method includes, steps of ascertaining a first partial air mass on the basis of a first load partial model, the first load partial model having a linear behavior, ascertaining a second partial air mass on the basis of a second load partial model, the second load partial model having a nonlinear behavior, and determining the total air mass by adding together the previously ascertained partial air masses.

Abstract: A method for model-based determination of the total fresh air mass flowing into the cylinder combustion chamber of an internal combustion engine during an intake phase is described. The method includes, steps of ascertaining a first partial air mass on the basis of a first load partial model, the first load partial model having a linear behavior, ascertaining a second partial air mass on the basis of a second load partial model, the second load partial model having a nonlinear behavior, and determining the total air mass by adding together the previously ascertained partial air masses.

Abstract: A drive device for a motor vehicle includes a multi-cylinder internal combustion engine and at least two exhaust gas turbocharger devices. At least one outlet valve is assigned to an exhaust gas turbocharger device of each cylinder of the internal combustion engine in such a manner that the exhaust gas duct assigned to this outlet valve is connected to the turbine wheel of the exhaust gas turbocharger device.

Abstract: A method of controlling an analog actual signal to conform to a digital desired signal uses a comparator with two input ports and one output port and a digital-to-analog converter. The analog actual signal to be converted is fed to one input port of the comparator and a analog output signal of the digital-to-analog converter is fed to the other input port of the comparator. The digital input signal fed to the digital-to-analog converter is adapted as a function of the output signal of the comparator in a definable number of iterative steps, between a definable lower and a definable upper threshold, according to the balancing method. The digital input signal fed to the digital-to-analog converter corresponds to the digital desired signal to which the analog actual signal is converted.

Abstract: A method of controlling an analog actual signal to conform to a digital desired signal uses a comparator with two input ports and one output port and a digital-to-analog converter. The analog actual signal to be converted is fed to one input port of the comparator and an analog output signal of the digital-to-analog converter is fed to the other input port of the comparator. The digital input signal fed to the digital-to-analog converter is adapted as a function of the output signal of the comparator in a definable number of iterative steps, between a definable lower and a definable upper threshold, according to the balancing method. The digital input signal fed to the digital-to-analog converter corresponds to the digital desired signal to which the analog actual signal is converted.

Abstract: A fuel injection system for internal combustion engines, has a distributor tube and a high-pressure pump which is driven as a function of engine rpm and serves to generate the fuel pressure and fuel throughput required in the distributor tube in the applicable operating state of the engine, and also has a fuel metering unit, which is assigned to the high-pressure pump and is based on an electromagnetically actuated regulating valve. The fuel metering unit is disposed in the high-pressure pump, and the outlet of the regulating value discharges into the low-pressure region of the high-pressure pump. The inlet of the regulating valve communicates with the compression side of a prefeed pump. The regulating valve has a valve piston, which is actuated—into the opening position—by a compression spring and which is actuatable counter to the spring force—into the closing position—by an armature bolt of the electromagnet.

Abstract: A fuel injection system for internal combustion engines, has a distributor tube and a high-pressure pump which is driven as a function of engine rpm and serves to generate the fuel pressure and fuel throughput required in the distributor tube in the applicable operating state of the engine, and also has a fuel metering unit, which is assigned to the high-pressure pump and is based on an electromagnetically actuated regulating valve (11). The fuel metering unit (10, 11) is disposed in the high-pressure pump, the outlet (36) of the regulating valve (11) discharges into the low-pressure region of the high-pressure pump. The inlet (32, 34) of the regulating valve (11) communicates with the compression side of a prefeed pump. The regulating valve (11) has a valve piston (23), which is actuated—into the opening position—by a compression spring (25) and which is actuatable counter to the spring force—into the closing position—by an armature bolt (14) of the electromagnet (10).

Abstract: A speed governor for fuel injection pumps of internal combustion engines that has a centrifugal adjuster that acts counter to the force of governor springs to generate a speed-dependent adjustment travel of a governor sleeve and that acts on a fuel quantity adjusting device of a fuel injection pump via the governor sleeve and a governor lever disposed thereupon In this process a charge-pressure-dependently adjustable stop for a full-load fuel supply quantity, which is disposed on a stop lever is pivoted as a function of temperature and speed into the adjustment path of a counter stop disposed on the fuel quantity adjusting device, in such a way that, after a certain speed and a certain operating temperature of the engine has been reached, the stop comes into contact with this counter stop of the fuel quantity adjusting device.